Spark Protocol hit a major milestone, facilitating $150m in Bitcoin-backed loans through institutional partnerships. The mechanics here are interesting: three major players staked $222m worth of BTC to unlock $150m in USDC liquidity, maintaining a solid 148% collateralization ratio. What's backing this liquidity play? The Sky ecosystem is flexing serious financial muscle—$6.5 billion in total reserves with $200m generating annually from a $1.2b market cap base. That kind of reserve depth signals genuine confidence in the lending infrastructure. It shows how DeFi borrowing has evolved beyond pure speculation into structured credit facilities where serious institutions feel comfortable deploying capital.